NR or Natural Rubber Polyisoprene
- Abbreviation: NR
- ASTM D-2000 Classification: AA
- Chemical Definition: Polyisoprene
Physical & Mechanical Properties
- Durometer or Hardness Range: 30 – 95 Shore A
- Tensile Strength Range: 500 – 3,500 PSI
- Elongation (Range %): 300% – 900%
- Abrasion Resistance: Good to Excellent
- Adhesion to Metal: Excellent
- Adhesion to Rigid Materials: Excellent
- Compression Set: Excellent
- Flex Cracking Resistance: Excellent
- Impact Resistance: Good to Excellent
- Resilience / Rebound: Excellent
- Tear Resistance: Good to Excellent
- Vibration Dampening: Good to Excellent
Chemical Resistance
- Acids, Dilute: Fair to Excellent
- Acids, Concentrated: Poor to Good
- Acids, Organic (Dilute): Fair to Good
- Acids, Organic (Concentrated): Good
- Acids, Inorganic: Good
- Alcohol’s: Good to Excellent
- Aldehydes: Good
- Alkalies, Dilute: Fair to Excellent
- Alkalies, Concentrated: Fair to Good
- Amines: Poor to Fair
- Animal & Vegetable Oils: Poor to Good
- Brake Fluids, Non-Petroleum Based: Good
- Diester Oils: Poor
- Esters, Alkyl Phosphate: Poor
- Esters, Aryl Phosphate: Poor
- Ethers: Poor
- Fuel, Aliphatic Hydrocarbon: Poor
- Fuel, Aromatic Hydrocarbon: Poor
- Fuel, Extended (Oxygenated): Poor
- Halogenated Solvents: Poor
- Hydrocarbon, Halogenated: Poor
- Ketones: Fair to Good
- Lacquer Solvents: Poor
- LP Gases & Fuel Oils: Poor
- Mineral Oils: Poor
- Oil Resistance: Poor
- Petroleum Aromatic: Poor
- Petroleum Non-Aromatic: Poor
- Refrigerant Ammonia: Good
- Refrigerant Halofluorocarbons: R-12, R-13
- Refrigerant Halofluorocarbons w/ Oil: Poor
- Silicone Oil: Good
- Solvent Resistance: Poor
Thermal Properties
- Low Temperature Range: -20º F to -70º F
- Minimum for Continuous Use (Static): -60º F
- Brittle Point: -80º F
- High Temperature Range: +180º F to +220º F
- Maximum for Continuous Use (Static): +180º F
Environmental Performance
- Colorability: Poor
- Flame Resistance: Fair to Good
- Gas Permeability: Fair to Good
- Odor: Good to Excellent
- Ozone Resistance: Poor
- Oxidation Resistance: Good
- Radiation Resistance: Fair to Good
- Steam Resistance: Good
- Sunlight Resistance: Poor to Fair
- Taste Retention: Fair to Good
- Weather Resistance: Poor to Fair
- Water Resistance: Excellent
For assistance in identifying the appropriate polymer or material, or to develop and formulate a NR or natural rubber compound to meet your specific application and performance requirements, please contact Rahco Rubber, Inc. at sales@rahco-rubber.com or 847-298-4200.
Rahco Rubber, Inc. makes no expressed or implied warranty as to any qualities, attributes, or characteristics of any polymer or material. This information is provided for reference only.